Study-la iv



(No Model.)

A. H. JONES.

STUDY LAMP.

No. 258,427. Patented May 23, 1882.

N. PETERS. Fham-Luho n mr, Wuhmgion. D. c.

Elwin: terns PATENT rrrclt- AUGUSTUS H. JONES, OEMERIDEN, CONNECTICUT.

STU DY,-LAM P.

SPECIFICATION forming part of Letters Patent No. 258,427, dated May 23, 1882.

Application filed December 30, 1881. (No model.)

1' 0 all whom it may concern Be it known that I, AUGUSTUS H. JoNEs, of Meriden, in the county of New Haven and State of Connecticut, have invented a new Improvement in Study-Lamps and I do hereby declare the following, when taken in connection with the accompanying drawing and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawing constitutes part of this specification and represents a side view, partly in section.

This invention relates to animprovementin the class of lamps commonly called studylamps --that is.to say, lamps which are provided with a fount having a tube leading from it to the wick-chamber and attached to a slide, so as to be adjustable on a vertical rod.

In the usual construction the fount is made removable to be filled. In such arrangement the oil is frequently spilled, and the removal and replacement of the fount are attended with more or less inconvenience. v

The object of this invention is to preserve substantially the same shape of fount,but yet make it a stationary part of the lamp; and it consists in attaching the fount to the tube which leads to the wick-chamber by a swiveljoint connection, through which the fount will open to the tube, and upon which the fount may be turned to an inverted position for the purpose of filling through the said tube, and returned and secured in its upright position, as more fully hereinafter described.

A represents the rod upon which the lamp is made adjustable; B, the slide on the rod, and through which is apassa gefor the oil, leading by the tube 0 to the wick-chamber D, and in the opposite direction by the tube E to the fount. F is the fount, of any desirable shape, here represented as the usual shape of the German study-lamp.

Instead of being made fast to the tube, with a passage leading therefrom directly into the tube, I form upon the outer end of the tube E a swivel-joint connection with the fountthat is to say, by a conical plug, a, on the end of the tube, with a corresponding shell, 1), outside the plug, and which is attached to or made a part of the fount, and so that the said shell will turn upon the plug in like manner as in joints in gas-fixtures. Through the plug is a passage,

01, making practically a continuation of the tube, leading one way, 0, upward, the other way, f, downward. When the fount is in its uprightposition the passage it through the connection coincides with the way 0, so that there is a direct passage from the fount through the tube E G into the wick-chamber.

The fount may be turned on the plug a into inverted position. Then the way fleads down into the fount.

The fount is made tight throughout. To fill it, invert it, as before described, and pour oil into the wick-chamber, from whence itwill flow through the tube E G and the wayf down into the fount until the fount be filled. Then turn the fount up into its proper position, where it is secured by a latch, l, or otherwise. The burner is introduced and the lamp operates in the usual manner for German study'lamps.

The oil flows from the fount into the wickchamber to substantially a level with the'upper side of the tube 0, or slightly above it, the vacuum which is in the fount above the oil preventing any greater flow through the tube. An air passage, m, is provided through the wick-chamber down to near the end ofthe tube 0, as shown. As the oil falls below the line of the tube air will pass through the opening m down to the mouth of the tube, and thence will flow through the tube into the fount, reducing the vacuum to that extent and permitting the oil again to rise in the wick-chamber, and so continuing, air will be supplied as the oil in the wick-chamber is consumed.

While i prefer this air-inlet, other provision maybe made by attaching directly to the fount devices well known; and while i prefer the usual shape of the German study-lamp, other founts may be used of different shapes or different material, it only being essential to this invention that the fount shall'be jointed to the supply-tube so as to be inverted for the purpose of filling, and that the filling may be through the tube which leads to the wick-chamber.

I do not broadly claim a fount arranged so as to be turnedfrom its upright position to be filled, as such, I am aware, is not new but I am not aware that a fount for lamps has been swivelcd to the tube which leads to the wickchamber, whereby the fount may be inverted and filled through the wick-chamber.

I claim- 1. The wick-chamber, fount, and tube leading from the fount to the wick -chamber, the said fount being attached to the said tube by a swiveledjoint, whereby the fount may be inverted on said joint, with an opening from said tube into the fount in both the upright and inverted position,whereby when in the inverted position the fount may be filled through the wick-chamber, substantially as described.

2. The wick-chamber, fount, and tube leading from the fount to the wick-chamber, the

said fount being attached to the said tube by 15 position the fount may be filled through the 20 wick-chamber, with mechanism, substantially such as described, to secure the fount in its uprightposition, and substantially as specified.

AUGUSTUS H. JONES.

Witnesses:

J 0s. 0. EARLE, J. H. SHUMWAY. 

